FFS.... Cadbury moved production to Poland many years before Mondelez became owners... and the Republic of Ireland long before that, attracted by advantageous tax breaks. The head office in Uxbridge goes way back to Cadbury Schweppes days. They also had offices in Maple Cross, Hertfordshire and probably elsewhere, as well.The factory you mention does not even have a head office in Brum its based in Uxbridge.
All absolutely nothing whatsoever to do with Kraft/Mondelez.
You seem to be determined to be argumentative about things which you clearly know less about than you maintain.